diff options
Diffstat (limited to 'lib/Basic/TargetInfo.cpp')
-rw-r--r-- | lib/Basic/TargetInfo.cpp | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/lib/Basic/TargetInfo.cpp b/lib/Basic/TargetInfo.cpp index 30378a5a75..2ee705272d 100644 --- a/lib/Basic/TargetInfo.cpp +++ b/lib/Basic/TargetInfo.cpp @@ -650,3 +650,50 @@ bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints, return true; } + +bool TargetInfo::initFeatureMap(llvm::StringMap<bool> &Features, + DiagnosticsEngine &Diags, StringRef CPU, + std::vector<std::string> &FeatureVec) const { + for (const auto &F : FeatureVec) { + const char *Name = F.c_str(); + // Apply the feature via the target. + bool Enabled = Name[0] == '+'; + setFeatureEnabled(Features, Name + 1, Enabled); + } + return true; +} + +TargetInfo::ParsedTargetAttr +TargetInfo::parseTargetAttr(const TargetAttr *TA) const { + std::pair<StringRef, std::vector<std::string>> RetPair; + + // Grab the target attribute string. + StringRef FeaturesStr = TA->getFeatures(); + SmallVector<StringRef, 1> AttrFeatures; + FeaturesStr.split(AttrFeatures, ","); + + // Grab the various features and prepend a "+" to turn on the feature to + // the backend and add them to our existing set of features. + for (auto &Feature : AttrFeatures) { + // Go ahead and trim whitespace rather than either erroring or + // accepting it weirdly. + Feature = Feature.trim(); + + // While we're here iterating check for a different target cpu. + if (Feature.startswith("arch=")) + RetPair.first = Feature.split("=").second.trim(); + else if (Feature.startswith("tune=")) + // We don't support cpu tuning this way currently. + ; + else if (Feature.startswith("fpmath=")) + // TODO: Support the fpmath option this way. It will require checking + // overall feature validity for the function with the rest of the + // attributes on the function. + ; + else if (Feature.startswith("no-")) + RetPair.second.push_back("-" + Feature.split("-").second.str()); + else + RetPair.second.push_back("+" + Feature.str()); + } + return RetPair; +} |